What is the difference between a normally open (NO) and normally closed (NC) liquid level switch?

A normally open (NO) liquid level switch stays in the open state when the liquid level is below the set threshold and closes the circuit when the liquid level rises to the desired level. A normally closed (NC) switch operates oppositely, being in a closed state when the liquid level is below the threshold and opening the circuit when the liquid level reaches the set level.

Why do some people use multiple liquid level switches in the same tank?

Utilising multiple liquid level switches in the same tank provides redundancy and more precise level control. They can be wired in parallel or series, depending on the desired functionality.

How do I troubleshoot a liquid level switch that is not functioning properly?

Troubleshooting measures include checking electrical connections, verifying power supply, inspecting for damage or debris affecting switch operation and ensuring proper switch calibration.

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Liquid Level Switches

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Liquid level switches are used to detect and control the level of liquids in tanks, reservoirs & pipelines to monitor and maintain desired liquid levels. They work on the principle of...Read more

MADISON -

Single Point Level Switch, 0.75 Inch Float Dia., 30 Watt, SPST, 240V AC, 0.40A

Model	Item	Price (inc. VAT)
M8000-75	CM7MYZ	£42.08

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL50-150S-3D	CV8CFQ	£331.40	See Details

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL75-150S-3D	CV8CFZ	£331.40	See Details

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL50-150S-3H	CV8CFR	£331.40	See Details

PROSENSE -

Rotating Paddle Bulk Solids Level Switch, 2000mm Rope Insertion Length

Model	Item	Price (inc. VAT)
PLS-4P-R-24D	CV8CCW	£546.89	See Details

PROSENSE -

Rotating Paddle Bulk Solids Level Switch, 300mm Insertion Length

Model	Item	Price (inc. VAT)
PLS-4P-3-230-HAZ	CV8CCN	£469.03	See Details

PROSENSE -

Rotating Paddle Bulk Solids Level Switch, 200mm Insertion Length

Model	Item	Price (inc. VAT)
PLS-4P-2-230	CV8CCF	£385.72	See Details

PROSENSE -

Float Liquid Level Switch, Vertical Top Mount, 32 Inch Length, 0.9 Inch Dia. Float

Model	Item	Price (inc. VAT)
FLS-VD-300	CV8BEG	£257.15	See Details

PROSENSE -

Float Liquid Level Switch, Horizontal Side Mount, 2.84 Inch Insertion Length

Model	Item	Price (inc. VAT)
FLS-HS-200	CV8BEA	£31.69	See Details

PROSENSE -

Float Liquid Level Switch, Horizontal Side Mount, 2.75 Inch Insertion Length

Model	Item	Price (inc. VAT)
FLS-HM-300	CV8BDU	£54.33	See Details

PROSENSE -

Float Liquid Level Switch, Horizontal Side Mount, 2.84 Inch Insertion Length

Model	Item	Price (inc. VAT)
FLS-HL-010	CV8BDM	£63.38	See Details

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL75-100S-2D	CV8CFV	£295.18	See Details

PROSENSE -

Rotating Paddle Bulk Solids Level Switch, 100mm Insertion Length

Model	Item	Price (inc. VAT)
PLS-4P-1-24D	CV8CCB	£427.37	See Details

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL75-100L-3D	CV8CFT	£322.34	See Details

ENDRESS HAUSER -

Solids Level Switch, 316L Stainless Steel

Model	Item	Price (inc. VAT)
FTI26-CA4VWDJ	CV8BFT	£525.16	See Details

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL75-150S-2D	CV8CFY	£331.40	See Details

PROSENSE -

Float Liquid Level Switch, Vertical Top Mount, 1.63 Inch Insertion Length

Model	Item	Price (inc. VAT)
FLS-VM-500	CV8BFC	£69.72	See Details

PROSENSE -

Rotating Paddle Bulk Solids Level Switch, 300mm Insertion Length

Model	Item	Price (inc. VAT)
PLS-4P-3-24D-HAZ	CV8CCQ	£559.57	See Details

PROSENSE -

Float Liquid Level Switch, Vertical Top Mount, 2.63 Inch Insertion Length

Model	Item	Price (inc. VAT)
FLS-VL-400	CV8BEU	£124.95	See Details

PROSENSE -

Float Liquid Level Switch, Horizontal Side Mount, 4.6 Inch Insertion Length

Model	Item	Price (inc. VAT)
FLS-HM-200	CV8BDT	£286.12	See Details

PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

Model	Item	Price (inc. VAT)
VFL75-100L-3H	CV8CFU	£322.34	See Details

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Recommendations

Functionality

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Categories

Brands

Liquid Level Switches

Single Point Level Switch, 0.75 Inch Float Dia., 30 Watt, SPST, 240V AC, 0.40A

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Rotating Paddle Bulk Solids Level Switch, 2000mm Rope Insertion Length

Rotating Paddle Bulk Solids Level Switch, 300mm Insertion Length

Rotating Paddle Bulk Solids Level Switch, 200mm Insertion Length

Float Liquid Level Switch, Vertical Top Mount, 32 Inch Length, 0.9 Inch Dia. Float

Float Liquid Level Switch, Horizontal Side Mount, 2.84 Inch Insertion Length

Float Liquid Level Switch, Horizontal Side Mount, 2.75 Inch Insertion Length

Float Liquid Level Switch, Horizontal Side Mount, 2.84 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Rotating Paddle Bulk Solids Level Switch, 100mm Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

Solids Level Switch, 316L Stainless Steel

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Float Liquid Level Switch, Vertical Top Mount, 1.63 Inch Insertion Length

Rotating Paddle Bulk Solids Level Switch, 300mm Insertion Length

Float Liquid Level Switch, Vertical Top Mount, 2.63 Inch Insertion Length

Float Liquid Level Switch, Horizontal Side Mount, 4.6 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

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Strictly Necessary Cookies

Advertising

Recommendations

Functionality

Analytics

Categories

Brands

Liquid Level Switches

Single Point Level Switch, 0.75 Inch Float Dia., 30 Watt, SPST, 240V AC, 0.40A

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Rotating Paddle Bulk Solids Level Switch, 2000mm Rope Insertion Length

Rotating Paddle Bulk Solids Level Switch, 300mm Insertion Length

Rotating Paddle Bulk Solids Level Switch, 200mm Insertion Length

Float Liquid Level Switch, Vertical Top Mount, 32 Inch Length, 0.9 Inch Dia. Float

Float Liquid Level Switch, Horizontal Side Mount, 2.84 Inch Insertion Length

Float Liquid Level Switch, Horizontal Side Mount, 2.75 Inch Insertion Length

Float Liquid Level Switch, Horizontal Side Mount, 2.84 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Rotating Paddle Bulk Solids Level Switch, 100mm Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

Solids Level Switch, 316L Stainless Steel

Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length

Float Liquid Level Switch, Vertical Top Mount, 1.63 Inch Insertion Length

Rotating Paddle Bulk Solids Level Switch, 300mm Insertion Length

Float Liquid Level Switch, Vertical Top Mount, 2.63 Inch Insertion Length

Float Liquid Level Switch, Horizontal Side Mount, 4.6 Inch Insertion Length

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

Frequently Asked Questions

What is the difference between a normally open (NO) and normally closed (NC) liquid level switch?

Why do some people use multiple liquid level switches in the same tank?

How do I troubleshoot a liquid level switch that is not functioning properly?

We are here to help!

Looking for a part not listed here?

Explore More